QCAD

What is QCAD?

QCAD has been around since the early 2000s and focuses on 2‑dimensional drafting. It grew out of the Qt‑based community and is now maintained as a stable, mature project with regular releases. The core application is free, with an optional commercial add‑on pack for extra libraries.

It targets engineers, architects, and hobbyists who need to produce schematics, floor plans, or mechanical drawings without the cost of a full‑blown 3D suite. The interface mimics classic CAD tools: a drawing canvas, toolbars, and a properties panel, making the transition from AutoCAD relatively straightforward.

Compared with Autodesk AutoCAD on Windows, QCAD feels lighter and less feature‑rich—there’s no 3D modeling or advanced parametric tools—but for pure 2D work it’s perfectly adequate. The learning curve is gentle, and the Qt‑based UI integrates well with the GNOME/KDE desktops.

Best for: Users who need reliable 2D drafting without paying for a heavyweight CAD package.

Key features of QCAD

• Layer management with visibility toggles
• Extensive DXF import/export support
• Basic dimensioning and annotation tools
• Customizable line styles and hatches
• Scriptable via ECMAScript (JavaScript)
• Printing to PDF and raster formats
• Snap and grid options for precise drafting

Tips for Windows users

Most AutoCAD users will find QCAD's DXF handling familiar; simply open your .dwg files by converting them to DXF first (many free converters exist). Keyboard shortcuts are similar for basic commands like line, circle, and trim, but some advanced shortcuts differ—spend a few minutes customizing QCAD's shortcut map to match your workflow. Expect a simpler toolset, so focus on 2D tasks and avoid looking for 3D features that aren’t present.